Problem with state inspection

2011 Nismo#91 · 08-22-2020, 11:45 AM

The place I go to never has an issue before without cats but now they tell me that the Catalyst and Heated Catalyst are not enabled. Not sure if that's normal. I used to be tuned with uprev before with Berk test pipes. But now with the new GTR TT and ecutek it won't seem to work. They suggested mini catalyst O2 sensors, O2 Simulator Mini Cat Cel Fix stainless steel Rear O2 sensor simulator. .

Any thoughts.

fryzia23 · 08-22-2020, 09:21 PM

I believe Your tuner turned them off so you get no check engine light for dreaded p0300 random misfire and catalyst efficiency faults. On my supercharged car I have 2 tunes that I I flash the ecu with. One is all monitors enabled so I can pass nj inspection and other one has all the ones you listed disabled.

NissanTracker · 08-26-2020, 09:10 PM

Interesting. I was having p0300 misfire coming on my supercharger setup. The default Stillen kit. I ended up getting the TopGunz A-A kit and it went away
Wonder if this is something I should look into, get a secondary tune for emissions testing. Thanks for the tip!

2011 Nismo#91 · 09-21-2020, 05:44 AM

So I now have all the sensors back on and I am getting a ton of codes thrown. And an occasional Misfire and SES light. Also installed a Dual AFR gauge.

08-22-2020, 11:45 AM	#1 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,381 Drives: slowly Rep Power: 33858	Problem with state inspection The place I go to never has an issue before without cats but now they tell me that the Catalyst and Heated Catalyst are not enabled. Not sure if that's normal. I used to be tuned with uprev before with Berk test pipes. But now with the new GTR TT and ecutek it won't seem to work. They suggested mini catalyst O2 sensors, O2 Simulator Mini Cat Cel Fix stainless steel Rear O2 sensor simulator. . Any thoughts. Rusty likes this.

08-22-2020, 09:21 PM	#2 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 447 Drives: 2011 MB 370Z NISMO Rep Power: 475	I believe Your tuner turned them off so you get no check engine light for dreaded p0300 random misfire and catalyst efficiency faults. On my supercharged car I have 2 tunes that I I flash the ecu with. One is all monitors enabled so I can pass nj inspection and other one has all the ones you listed disabled. 2011 Nismo#91, danegrey and NissanTracker like this.

08-26-2020, 09:10 PM	#3 (permalink)
NissanTracker Track Member Join Date: Jun 2016 Location: Massachusetts Posts: 724 Drives: 07' Nismo, 14' Nismo Rep Power: 29261	Interesting. I was having p0300 misfire coming on my supercharger setup. The default Stillen kit. I ended up getting the TopGunz A-A kit and it went away Wonder if this is something I should look into, get a secondary tune for emissions testing. Thanks for the tip! 2011 Nismo#91 likes this.

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09-21-2020, 05:44 AM	#4 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,381 Drives: slowly Rep Power: 33858	So I now have all the sensors back on and I am getting a ton of codes thrown. And an occasional Misfire and SES light. Also installed a Dual AFR gauge.